count hits/matches - INCREMENT

Hi!

My Question is, how to count hits.

For example in java, it would be like this:
===============================
...

int k = 0;

for(int i = 0; i<matches.length; i++) {
   if(matches[i] == true) {
      k++;
   }
}

return k;

...
===============================

Is it possible in XSL to change the value of a variable in a <xls:for-each>
and get the value after the <xsl:for-each>?

Thanks!
Dariusz
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